<!doctype html>
<title>undefined as arguments</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
async_test(t => {
  const worker = new SharedWorker(undefined, undefined);
  worker.port.onmessage = t.step_func_done(e => {
    assert_equals(e.data[0], 'undefined', 'first arg (script name)');
    assert_equals(e.data[1], '', 'second arg (worker name)');
  });
}, 'Test constructing a shared worker with undefined');
</script>
